IRL, would Joe have been tangled in additional red tape in getting his burial rites just for serving under false pretense? Joe did assume a false identity in order to penetrate a militant organization.
It's a sign that Kacie's character is underdeveloped, that they can't yet refer to her by last name and be confident that we in the home audience will recognize it. Abbey used a first name too, maybe meaning that the scientists and Jimmy are actually civilians.
By now, seasoned Ncis agents should be able to empathize with these veterans, McGee's misunderstandings could be a spokesperson's role for the audience at home. If so, the writers underestimate us at home.